Relief device for compressors.



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(iii Bfiifi'ilikilflflilli ilflit IfiRUDQ IflIfiQOmK PE z a in SHHEA on the arm -cl iabnintthe'Umted/Stat ssesidi. mttfii'l s pn ai ing-3945mm l ded, with an adjustwmlthe county'pf EflflrfllldgfiflflQ-fifiy ennsylmg screw 31 to vary t e maximum opening 60 waniarahava irrventedunaw nnihuseinlwlmthe valve 0-, p

prominent R fi f1DeWmiQ 1Z Q# !B "Ihe. pipes lfhone, from eachintake valve, sorsg of which'rthe*tofl ningtisla spesifia wl aid tapiln iteside p th y d 13 tion. we -fermin a giqmmun cati nl th y r :uTihiSllDVflliflQIl'i relates cfi ilavmes the open g 3,? in the walls of the 65 1o andeconsistsiimcartain;amprpnen cntsjn the y n en- 'Ilre ya ye; ld' is held in its lower construction thnteofi as. will bei hereimaiter ,pps1tion by a spring 32, the sp'i'in being tenfully described and po'nted'out in theclaims. sionedbetween'the ,vialve and t e plug 33 The. inNentiQltiSJlllJSh 'fifid-iin th -M0 3 a th upper a d he cylinder- A small I panying drawings asjiollaw 1; ieak openingf 4 ..is arranged through the 70 yAFigureJI i hpws; ai-sidenelevationlmcfi the rains andgigheplaiglfifi has an openin 33 "compressor cylinder:withsrehef'ridevicc sin o .sp si ent sige to ta e car e of any leaiage v .n i thm gh tha lem ripp es 3-- M eFE1g-E;Z. afi ahlonwdnlthaluiell w inE gt 1 it a lha-sbser d tha t weight p 1: rzlz'ima'l ks the? compressorrcyl ndet'v th matmgagainstethe pistonBl forms a counter- 75 w p w h fil -relax s ameni ies-a tress-areas? ninet es approximately in theeinlaetipafifi gmih lflfighalrblfi ms seamen hi t??? qih iri so that theistemstofi thminlet relive ext n s, an 6 .tn hen t I e. pi t eginsto move, it mo es :1 'aspring tenflm etarel adthesinlfltwnl e and su ii iantdistance ordinarily to open the wibeingialrla d: ".trae a haspieer swat -traitssom distan e an l t in Suflicient head 7 on t e stem 5. The lnlet-lnalye seat agngunt qf air topositively operate the parts. andi-itspants-,aneic ntain tli div si e; cara rf ilh .e l fi ni lty. Which a b encountered rier =S WhiOh-fiWFi1M-t Q qpfiningrimt aii th time v id es is that with the 601mcylinders-4. fl he. carrierl8ihasitnear nslric tsemesters; da sie aken t air pressure openingd) in its rear 0nd 'lni-"Wh1Gh1i$ 'BI 'renches a po nt which in its action on the 85 ranged a plimgerllfl. htcap il-1 arranged ,1 pistqn gl ,willpracfically balance the counbvev the-earrien 8,,t1snsbiormin a closure ttespre sure th weight 27 the seating :rer chei lunger iflandithusm' '.shagwi hearmsenraisieinw d mm valve 20 an the cylinder 9ra'reliefrvalve-1-n otor. i tin-consequence there is, under such circum- Apipe 12 leadsirom thelcapell tq a cyl- 1 stances ant-unavoidable leaka e past the 90 85' inder 13. The wfiindfilhi3 1 1321 19 wi l i fl i'i 0 1 Thisilleflkaige if l irect to the aiplunger walverl i- The cylinder has a-rfireliezfideviceis sufficient toibuild up a presdnoed bottom which extendsinto an opening ,sunegunder the plun r 10 that will a little 15 in a controlling motor oily 16..wAr c10- moralthan balance t e sprin 6 so that in 1 sureeplugnl'msicrranged lnltheendlnirt \i ih iQilwa'ti n of the comp the Valve 3 95 body lfiforlningkachamher lficomiuumcahr willlbe apenipart of the stroke but when ving with theq c linder 13a passage- 19 subjected to the high velocity of other parts leads from thec amherrm and ithis'passage the stmkewi11 close. This closi g ill is controlled by avalateafllt .walwaBQ isl take llplapb somewhere" during the central carried by a pistonzfllthe -pistonlb ing ar-r part oi' the strokcand; the closing due to the 100 ranged in a cylinder 22 in the body 1%; A ;;high gvelocityof the air will be very violent pipe 23 leads from the cylinder 22 to the dis-, thus, injuring the valve. In the present incharge .or'receiver 24 leading from the comqventiong his diiliculty is entirely obviated pressor. Ordinarily the pipe-23 would lead in that the leak opening 34 is suiiicient to to a larger receiver than the pipe24 so as take care of this leakage which accompato relieve it of the pulsations of the com nies the balanced condition. When a suflipressor, the essential feature being t at it be cient amount of air is delivered tothe chamconnected with the .suppl of pump (1 fluid ber 18 to start to move the valve 14 which varying in pressure as t e ressureof the will be incident to an opening by the valve pumped fluid varies. A pus pin 25 is car- 20 this will be sufficient to immediately lift ried gigainst the piston 21 and a rock arm the valve 14: past the openings 35 so that 26. he rock arm 26 is mounted on a pin pressure sufiicient to positively actuate the piston 10 will be delivered to the relief motor and this pressure will be suflicient to hold the valve open even against a high velocity. When the pressure is again reduced in the receiver, the valve 20 is closed and this permits the valve 14 to close and give a practically instant release to the plunger 10.

In order to hasten this release where very violent fiuctuationsare encountered I prefer to provide the openings 36 through the sides of the valve 14. These openings lead into a circumferential groove 36 and to a discharge openin 13 so that when the plunger reaches 1: is point in its downward movement the air is immediately discharged from the pipes 12 fandthe relief valve motors.

What I claim as new is r- 1. In a relief device for compressors, the combination of a compressor cylinder; a relief mechanism on the cylinder; a fluid actuated relief motor actuating said mechanism; a controlling valve for said motor closing and openin by a movement of the valve head towar and from the valve'seat; a valve motor for said valve controlled by the pumped fluid from the compressor; a counterpressure device for the valve motor having approximately uniform. resistance to the valve motor as the valve opens; and a connection between the controlling valve and the relief motor havin a leak suificient to omit the escape of a leakage incident to a alanced condition of the valve motor.

2. In a relief devicefor compressors, the combination of a compressor cy inder; a relief mechanism on the cylinder; a fluid' actuated relief motor actuating said mechanism; a controlling valve for said motor; a valve motor for said valve controlled by the pumped fluid from the compressor; a counterpressure device for the valve motor hav ing a proximately uniform resistance to the va ve motor as the valve opens; a connection between the controlling valve and the relief motor having a leak suiiicient'to ermit the escape of a leakage incident to a alanced condition of the valve motor; an aux-- iliary valve controlling the connection actuated by the air in the connection; and an auxiliary pressure device for the valve retarding the action of the valve until the pressure in the connection is suflicient to positively actuate the relief motor.

3. In a relief device for com combination of a compressor cy inder; a. relief mechanism on the cylinder; a fiuidactuated relief motor actuatmg said mechanism; a controlling valve for sand motor; a valve motor for said valve controlled by the ressors, the

pumped fluid from the compressor; a counterpressure device for the valve motor having a proximately uniform resistance to the va tion between the controlling valve and the relief motor havin a leak sufficient to ormit the escape of adeakage incident to a alanced condition of the valve motor; and a cylindrical valve controlling said connection actuated by the air in the connectioii, said cylindrical 'valve having an intermediate lpassage arranged in the walls thereof to asten the release of the air from said connection.

4. In a relief device for compressors; the combination of a compressor, cylinder; a relief mechanism on the cylinder; 31 fluid actuated relief motor actuating said mechanism; a controlling valve for said motor; a valve motor for said valve controlled by the pumped fluid from' the compressor; a counterpressure device for the valve motor having approximately uniform resistance to the valve motor as the valve opens; a connectionbetween the controlling valve and the relief motor having a leak suflicient to permit the esca e of a leakage incident to a balanced condition of-the valve motor; a cylindrical valve controlli said connection actuated by the air in the connection, said cylindrical valve having ate passage arranged in the walls thereof to hasten the release of the air from said connection; and an auxiliary ressure device for the valve retardingt e action of the valve until the pressure in the connection is sufiicient to positively actuate the relief motor.

5. In a relief device combination of a compressor cylinder; a relief mechanism on the cylinder; 'a fluid actuated relief motor actuating said mech-' anism; a controlling valve for said motor closin and opening by a movment of the valve ead' toward and from the valve seat; a valve motor for said valve controlled'by the pumped fluid from the com ressor; a counterpressure device for the va ve motor, said controllin valve and counterpressure device being re atively arranged to give an abrupt opening to the valve when the valve motor is actuated; and a connection between the controlling valve and the relief motor havin a leak sufiicient to permit the esca e of a eakage incident to a balanced condition of the valve motor.

In testimony whereof, I hereunto set my hand.

for compressors; the

RUDOLPH CONRADER.

an intermedive motor as the valve opens; a connecno i 

